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| S3500 Mobility Access Switch
Aruba S3500 Series Wired Access Point
| Installation Guide
Dynamic Mode: This the default mode. The per port power budgeted from the total power supplied from
the PSUs is equal the amount of power consumed by the port.
Static Mode: The amount of power used by a specific port is the maximum power configured on that
port by the user. This mode ensures that the maximum power specified by the user is reserved and not
shared with other ports.
Class-based Mode: The power allotted to the port is the maximum amount of power for the class of
powered device connect to that port.
The S3500-P requires at least one 600W power supply. Each power supply allocates 200W of power to the
S3500 for non-PoE, system functions. This limitations applies to each power supply. Therefore, if you have
two power supplies installed, a total of 400W is set aside for non-PoE use.
In addition to the 600W power supply, a 1050W power supply is available for use with PoE capable S3500s.
The type and number of power supplies installed in your S3500 will determine the amount of power
available for PoE and the number of PoE capable ports. The following table describes the possible power
supply configurations available for a PoE capable S3500.
PoE Priority
If the S3500 experiences a reduction in power while the entire power pool is being used, the S3500 will
begin disabling ports based on port priority until the required power is available again. Ports with a lower
priority will stop receiving power before ports of a higher priority. Port priority can be configured by the
user to ensure that necessary devices have power whenever possible. However, if any number of ports have
the same priority, ports with the higher interface number will stop receiving power first.
For example:
If interface 0/0/4 and interface 0/0/10 have the same priority but there is not enough power for both, the
S3500 will eliminate 0/0/10 first.
Table 20
PoE Power Supply Configurations
PSU 0
PSU 1
PoE Available
Number of Ports
(802.3af 15.4W)
Number of Ports
(802.3at 30.0W)
600W
None
400W
25
13
600W
350W
400W
25
13
600W
600W
666W
42
22
1050W
None
850W
48
28
1050W
350W
850W
48
28
1050W
600W
666W
42
22
1050W 1050W
1416W
48
48
For more information on PoE and PoE management, see the
ArubaOS 7.1 User Guide.
